Moves WindowCycleList/Controller to ash/common

ash/common/wm_window.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_COMMON_WM_WINDOW_H_
 #define ASH_COMMON_WM_WINDOW_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 14 matching lines @@
 class Rect;
 class Size;
 class Transform;
 }
 
 namespace ui {
 class Layer;
 }
 
 namespace views {
+class View;
 class Widget;
 }
 
 namespace ash {
 
 class WmLayoutManager;
 class WmRootWindowController;
 class WmShell;
 class WmWindowObserver;
 enum class WmWindowProperty;
@@ skipping 219 matching lines @@
   // the ancestor.
   virtual void SnapToPixelBoundaryIfNecessary() = 0;
 
   // Makes the hit region for children slightly larger for easier resizing.
   virtual void SetChildrenUseExtendedHitRegion() = 0;
 
   // Sets whether descendants of this should not be moved to a different
   // container. This is used by SetBoundsInScreen().
   virtual void SetDescendantsStayInSameRootWindow(bool value) = 0;
 
+  // Returns a View that renders the contents of this window's layers.
+  virtual std::unique_ptr<views::View> CreateViewWithRecreatedLayers() = 0;
+
   virtual void AddObserver(WmWindowObserver* observer) = 0;
   virtual void RemoveObserver(WmWindowObserver* observer) = 0;
   virtual bool HasObserver(const WmWindowObserver* observer) const = 0;
 
  protected:
   virtual ~WmWindow() {}
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_WM_WINDOW_H_